Shed permit rules in Redmond, WA — also referred to as storage shed, backyard shed, or accessory building regulations — set size limits, setbacks, and when a building permit is required.
Sheds 200 sq ft or smaller are exempt from building permits in Redmond per IRC R105.2 and must meet RMC 21.08 setback and lot coverage rules; larger sheds require building permits.
Redmond follows the Washington State Residential Code (IRC) as adopted through RMC 15.04, which exempts one-story detached accessory structures 200 square feet or smaller from a building permit when used for storage, tool, or playhouse purposes. Permit-exempt status does not exempt the shed from zoning compliance under RMC 21.08. Sheds must meet minimum setbacks (typically 5 feet from rear and side property lines in most residential zones, and out of front yard setbacks), respect maximum lot coverage percentages, and stay below the zones accessory structure height limit (typically 15 feet). Sheds larger than 200 sq ft require a building permit with foundation and structural review. Sheds in critical area buffers or within shoreline setbacks are heavily restricted under RMC 21.64 and the Shoreline Master Program regardless of size. Electrical and plumbing work always requires separate permits even for permit-exempt sheds.
Contact your local code enforcement office for specific penalty information.
Redmond, WA
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Redmond, WA
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Side-by-side rule comparisons with other cities in King County.
See how other cities in King County handle shed rules.
See how Redmond's shed rules rules stack up against other locations.
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